在Windows98下利用VB的串行通讯控件可实现PC机与多单片机之间的通讯。采用定时器控制大大加快了自动化进程，克服了往多“握手”协议造成的通讯速度缓慢的缺点。本文以PS1016单片机为例，详细介绍了PC机与单片机之间的串行通讯、数据的发送和接收。 -in Windows98 using VB serial communication controller can be achieved with a PC between the MCU communications. Using the timer control greatly accelerate the automation process, more to overcome the "handshake" agreement caused by the slow pace of the communications shortcomings. Based PS SCM example, the detail of PC and SCM between the serial communications, data transmission and reception.